|Covid-19|Emperor Justinian I sends Narses, Byzantine general, to the rulers of the Heruli, to recruit troops for the campaigns in Italy and Syria.
Gothic War: King Totila establishes his military base at Tivoli (Central Italy), and prepares a campaign to reconquer the region of Latium.
King Khosrau I signs a five year truce with the Byzantine Empire, but war continues to ravage the Caucasus region, especially in Armenia.
The monastery of Clonmacnoise is founded by Ciarán Mac a tSaor on the River Shannon (approximate date).
The Synod of Brefi is held at Llanddewi Brefi, to condemn the Pelagian heresy. Dubricius, archbishop of South Wales, resigns his position in favour of David (approximate date).
Abd Allah ibn Abd al Muttalib, father of Muhammad (d. 570)
Fei Di, emperor of Northern Qi (d. 561)
Peter, Byzantine general (d. 602)
Budic II, king of Brittany (approximate date)
Clotilde, Burgundian princess (b. 475)
Laurence, bishop of Sipontum (approximate date)
Medardus, bishop of Vermandois (approximate date)
Stotzas, Byzantine rebel leader
Year 545 (DXLV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 545 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.